Re: [PATCH v2 09/11] gitweb: git_is_head_detached() function

[Junio C Hamano <gitster@pobox.com>]

Giuseppe Bilotta <giuseppe.bilotta@gmail.com> writes:

> The function checks if the HEAD for the current project is detached by
> checking if 'git branch' returns "* (no branch)"

This one looks more like "oops, the way detached HEAD is detected in 08 is
sucky, let's cover it up by introducing a function as an afterthought."

Have a patch that introduces git_is_head_detached() first, and then use
that function to implement the feature.  I personally think the user (that
is, 08/11) is small and isolated enough that these two can be a single
patch.

> +# check if current HEAD is detached
> +sub git_is_head_detached {
> +	my @x = (git_cmd(), 'branch');
> +	my @ret = split("\n", qx(@x));
> +	return 0 + grep { /^\* \(no branch\)$/ } @ret;
> +}

Do not read from Porcelain in scripts.

"git symbolic-ref HEAD" should error out when your HEAD is detached, and
will return refs/heads/frotz when you are on frotz branch.

But realistically speaking, what does it mean to have a detached HEAD in a
repository published via gitweb?  First of all these things are supposed
to be bare and there would be no checkout.